iPhone 6 T-Mobile Contract Free from Apple, Does That Mean its Unlocked For Other Carriers?

For those of you who are ordering the iPhone 6. You know it was pretty crazy trying to get a pre-order. More confusing, was whether or not the iPhone 6 t-mobile unlocked version will work on other carriers?

I did some research and found the following chat exchange between a customer and an apple rep on the apple support communities which basically confirms whether you can use the t mobile variant on other carriers like at&t and verizon out the box.